File-sharpening machine



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Vl. P. WAGNON ET AL FILE SHARENING: MACHINE 0riginal- Filed Oct. 1'7. 1921 H II Patented il, 12233. i i

TiILLALI P. WAGNON, 01:7' PORTLAND, @REC-N, AND HARRY J. BOMAR, OF TACOMA, HASHINGTON.

FILE-SHARPENING MACHINE.

Application filed October 17, 1921, Serial No, 508,407. Renewed August 21, 1923.

To all @aimant-may a/cera.' and has an opening 27 sumciently large to Be it hereby known that we, VILLIAM permit the workman to see the operation. llVAcNoN and HARRY J. Bonnin, citizens A removable cover 27A occupies the space of the United States and residents, respecbetween the guard and the cover 11. y 5 tively, ot Portland, county olf Multnomah, A steam pipe 28 is mounted in iront of 69 and State of Gregori, and Tacoma, county the member 13 and has opening upwardly of Pierce, State of llVashington, have inthe two Ts 29 from which rise thenipples vented a new and useful File-Sharpening and the elbows 31 which carry the noezle Machine? of which the following is a specitips 32, over which are placed the lls l0 fication. u whose ends carry the short nipples 34 and 65 This invention relates more particularly whose side openings contain t-he nipples to means tor resharpening tiles. 36. rEhe elbows 37 on the nipples 36 conrllhe objects of our `invention are to intain the pipes 3S which reach almost to the crease the capacit-y over existing machines, bottom of the sump between the lower ends l5 economize abrasives, secure better cutting` of the floors 16 and 1'?. 70 action from abrasives used, and render the Numerous other refinements such as employment of skilled labor less necessary. cleaning jets, as are now used on devices of We attain these results in the manner set this nature, may be embodied as best seen forth in the specification following and illit. 20 lustrated in the accompanying drawing5 in In order to prevent an accumulation of 75 which: water in the sump we have provided an Figure 1 is a vertical section through the overflow pipe 40 having on its outside a length of the machine. Figure 2 is a plan flange 41 and on its inside a gasket 42, a of Figure 1 with the guard and a portion washer 43 and an elbow 44 which is turned 25 of the cover removed. Figure 3 is an end upwardly and to the rear, or away from 80 elevation from the operators side. Figure the path of the steam. This prevent-s steam 4 is a lull sized detail ot the nozzles. and abrasives from being blown out of the Similar numbers oli' reference reter to the waste pipe 40. same or similar parts throughout the sev- The operation or' our device is as follows: il" eral views. A iile 39 is placed between the nozzles 34 35 Referring in detail to the drawing1 we and steam is admitted through the pipe 28. have constructed our device of wood and A quantity of water and abrasives having made same in box form having a bottom 10, been placed in the sump it is well known a top 11, a back 12 and a trent 13, as well fact that the steam will draw the liquid and 3b as the two similar sides 14, all oit which are abrasives up through the pipes 88 and pro- 90 supported by the `tour legs 115. Inside of `ject same with great force against the tile the box we have placed a front sloping floor in the direction of its point. This steam 16 and a rear sloping fioor 17 which almost spends its force in striking the baille 22, meet in front of the center of the box and the floor 17 and the baffle 20 by which time 5U form a sump with the bottom of the box. it has lost most of its force and abrasives, 95

@n the upper side of the inclined licor 17 and the steam now passes out through the we have placed cleats 1S which Yform inexhaust stack 19. Some abrasives and water verted l! almost reaching the sides 14. 1n may also oiler to escape through the opening -it'ront of the center of the cover 11 we have 27 but will be deflected downwardly by the placed an exhaust stack 10. Behind this apron 24. l0@ stack and under the cover 11 is secured an lt will be observed that by putting the inclined baille plate 2O on whose rearward cleats on the floor 17 and the baiiles 2O and or upper side are placed the cleats 21 simi- 22 that any abrasive laden steam will be lar to the cleats 18, Under the stack 19 and carried by the cleats to the outer sides of secured to the cover 11 is a second inclined the box where the velocity of the steam is 105 baille 22 upon which are secured the cleats much less which will permit the return of 23. At the forward end of the battle 22 is the abrasives to the sump instead of er;-

secured a curved sheet metal apron 24 whose peiling same through the stack 19.

use will be described later. Experience has indicated that the money A guard 25 rests against the cleats 26 value of the abrasive alone might not in 110 some cases warrant thel above-mentioned precautions, but it has also taught us that reusing the abrasive continually improves its action on the file since it forms a kind of mud or cement which materially assists in the process. Tere these materials constantly blown away as is now done, leaving only the clean abrasive, the results would be disappointing as far as speed and quality of work are concerned.

By the use of two fine nozzles directed against opposite sides of the work we not only double the capacity of the machine. but lessen the work for the operator, for he does not need to hold the file against the single jet of steam.

It will be understood that numerous devices have been produced purporting to an elevated boX having sump forming inclned floors and a series of baffle plates around which steam must pass before being exhausted, in combination with a pair of converging injectorsfor carrying material from said sump and projecting same against two sides of a file at the same time, and an overflow pipe having its inlet turned upwardly and rearwardly away from the discharge ofthe injectors.

2. In a file sharpening machine, the combination of a box means, a pair of injectors which converge within said box, two bottoms sloping toward the middle of said box, cleats secured on the upper side of the farthermost slope in the form of an inverted V, a discharge stack near the forward end of the top of said box, a downward and rearwardly sloping baffle attached to the under side of the box ycover in front of said stack, a pendant apron in front of the upper end of said baffle, and a downwardly and forwardly sloping baffle behind said stack.

WILLIAM P. WAGNON. HARRY J. BOMAR. 

